package com.yjz.jvm.juc;

import org.junit.Test;

import java.util.Map;
import java.util.Set;
import java.util.concurrent.ConcurrentHashMap;
import java.util.concurrent.Executors;
import java.util.concurrent.ThreadPoolExecutor;

public class ConcurrentTest {
  @Test
  public void test() {
    Integer a = 2;
    Integer b = 3;
    System.out.println(b > a);
    Map map = new ConcurrentHashMap();
    map.put("name", "张三");
    map.get("name");
  }
}
